46#define CTL "\001\002\003\004\005\006\007" \
47 "\010\011\012\013\014\015\016\017" \
48 "\020\021\022\023\024\025\026\027" \
49 "\030\031\032\033\034\035\036\037" "\177" "\0"
63#define LWS SP HT CR LF
65#define LOALPHA "abcdefghijklmnopqrstuvwxyz"
67#define UPALPHA "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
69#define ALPHA LOALPHA UPALPHA
71#define DIGIT "0123456789"
74#define ALPHANUM DIGIT ALPHA
75#define HEX DIGIT "ABCDEF" "abcdef"
80#define SIP_TOKEN ALPHANUM "-.!%*_+`'~"
82#define SIP_SEPARATOR "()<>@,;:\\\"/[]?={}" SP HT
85#define SIP_WORD "()<>:\\\"/[]?{}"
88#define skip_ws(ss) (*(ss) += span_ws(*(ss)))
91#define skip_lws(ss) (*(ss) += span_lws(*(ss)))
94#define skip_alpha(ss) (*(ss) += span_alpha(*(ss)))
97#define skip_digit(ss) (*(ss) += span_digit(*(ss)))
100#define skip_alpha_digit_safe(ss) (*(ss) += span_alpha_digit_safe(*(ss)))
103#define skip_token(ss) (*(ss) += span_token(*(ss)))
106#define skip_param(ss) (*(ss) += span_param(*(ss)))
109#define skip_word(ss) (*(ss) += span_word(*(ss)))
112#define IS_CRLF(c) ((c) == '\r' || (c) == '\n')
114#define IS_LWS(c) ((c) == ' ' || (c) == '\t' || (c) == '\r' || (c) == '\n')
117#define IS_WS(c) ((c) == ' ' || (c) == '\t')
119#define IS_NON_WS(c) (c && !IS_WS(c))
122#define IS_NON_LWS(c) (c && !IS_LWS(c))
125#define IS_DIGIT(c) ((c) >= '0' && (c) <= '9')
127#define IS_ALPHA(c) (c && ((_bnf_table[(unsigned char)c] & bnf_alpha)))
129#define IS_ALPHANUM(c) (c && (IS_DIGIT(c) || IS_ALPHA(c)))
131#define IS_UNRESERVED(c) ((_bnf_table[(unsigned char)c] & bnf_unreserved))
133#define IS_RESERVED(c) (c && !(_bnf_table[(unsigned char)c] & bnf_unreserved))
135#define IS_TOKEN(c) ((_bnf_table[(unsigned char)c] & bnf_token))
137#define IS_PARAM(c) ((_bnf_table[(unsigned char)c] & (bnf_token|bnf_param)))
139#define IS_HEX(c) (((c) >= '0' && (c) <= '9') || ((c) >= 'A' && (c) <= 'F') || ((c) >= 'a' && (c) <= 'f'))
141#define IS_TOKENLWS(c) ((_bnf_table[(unsigned char)c] & (bnf_token|bn_lws)))
163#define span_non_crlf(s) strcspn(s, CR LF)
166#define span_non_ws(s) strcspn(s, WS)
169#define span_ws(s) strspn(s, WS)
172#define span_non_lws(s) strcspn(s, LWS)
182 if (e[i] ==
'\r') i++;
183 if (e[i] ==
'\n') i++;
185 e += i + strspn(e + i,
WS);
220 while (*e >=
'0' && *e <=
'9')
279 s += strcspn(s,
"\\\"");
291#define URL_RESERVED ";/?:=+$,"
294#define URL_MARK "-_.!~*'()"
297#define URL_UNRESERVED ALPHANUM URL_MARK
300#define URL_ESCAPED "%"
301#define URL_DELIMS "<>#%\""
302#define URL_UNWISE "{}|\\^[]`"
303#define URL_SCHEME ALPHANUM "+-."
306#define span_url_scheme(s) strspn(s, URL_SCHEME)
@ bnf_unreserved
URL unreserved.
Definition bnf.h:150
@ bnf_token0
SIP token, not alphabetic (0123456789-.
Definition bnf.h:153
@ bnf_token
SIP token.
Definition bnf.h:154
@ bnf_safe
RTSP safe.
Definition bnf.h:148
@ bnf_mark
URL mark.
Definition bnf.h:149
@ bnf_param
SIP/HTTP parameter.
Definition bnf.h:156
@ bnf_ws
Whitespace character
Definition bnf.h:144
@ bnf_param0
SIP parameter, not token.
Definition bnf.h:155
@ bnf_lws
Linear whitespace.
Definition bnf.h:146
@ bnf_crlf
Line end character.
Definition bnf.h:145
@ bnf_alpha
Alphabetic.
Definition bnf.h:147
@ bnf_separator
SIP separator.
Definition bnf.h:151
int scan_ip_address(char **inout_host)
Scan valid IP4/IP6 address.
Definition bnf.c:554
int span_ip6_address(char const *host)
Return length of valid IP6 address.
Definition bnf.c:453
isize_t span_lws(char const *s)
Calculate span of a linear whitespace.
Definition bnf.h:177
isize_t span_token_lws(char const *s)
Calculate span of a token or linear whitespace characters.
Definition bnf.h:190
isize_t span_digit(char const *s)
Calculate span of a digits.
Definition bnf.h:217
isize_t span_hexdigit(char const *s)
Calculate span of a hex.
Definition bnf.h:226
int span_ip6_reference(char const *host)
Return length of valid IP6 reference.
Definition bnf.c:491
int scan_ip6_address(char **inout_host)
Scan and canonize valid IP6 address.
Definition bnf.c:467
isize_t span_alpha(char const *s)
Calculate span of a alphabetic characters.
Definition bnf.h:208
#define IS_UNRESERVED(c)
Test if is URL-unreserved.
Definition bnf.h:131
int scan_ip4_address(char **inout_host)
Scan and canonize a valid IP4 address.
Definition bnf.c:213
#define WS
Whitespace.
Definition bnf.h:61
#define IS_PARAM(c)
Test if is valid for SIP parameter value.
Definition bnf.h:137
#define IS_WS(c)
Test if is normal whitespace.
Definition bnf.h:117
#define IS_TOKEN(c)
Test if is valid in tokens.
Definition bnf.h:135
isize_t span_host(char const *host)
Return length of a valid domain name or IP address.
Definition bnf.c:662
int span_ip_address(char const *host)
Return length of valid IP4 or IP6 address.
Definition bnf.c:535
unsigned char const _bnf_table[256]
Table for determining class of a character.
Definition bnf.c:55
isize_t span_param(char const *s)
Calculate span of a characters valid in parameters.
Definition bnf.h:244
isize_t span_domain(char const *host)
Return length of a valid domain name.
Definition bnf.c:637
isize_t span_quoted(char const *s)
Calculate span of a double quoted string (with escaped chars inside)
Definition bnf.h:271
#define SIP_WORD
SIP Word characters (that are not token characters)
Definition bnf.h:85
issize_t scan_domain(char **inout_host)
Scan valid domain name.
Definition bnf.c:643
int span_ip4_address(char const *host)
Return length of valid IP4 address.
Definition bnf.c:207
isize_t span_word(char const *s)
Calculate span of a SIP word.
Definition bnf.h:253
int scan_ip6_reference(char **inout_host)
Scan valid IP6 reference.
Definition bnf.c:505
isize_t span_unreserved(char const *s)
Calculate span of a unreserved characters.
Definition bnf.h:262
#define IS_HEX(c)
Test if is a hex digit.
Definition bnf.h:139
isize_t span_token(char const *s)
Calculate span of a token characters.
Definition bnf.h:199
issize_t scan_host(char **inout_host)
Scan valid domain name or IP address.
Definition bnf.c:680
isize_t span_alpha_digit_safe(char const *s)
Calculate span of characters belonging to an RTSP token.
Definition bnf.h:235